auth.ts

import NextAuth from "next-auth"
import { PrismaAdapter } from "@auth/prisma-adapter"
import { db } from "@/lib/db"
import  authConfig  from "@/auth.config"
import { getUserById } from "./data/user"
import { UserRole } from "@prisma/client"
import { getTwoFactorConfirmationByUserId } from "@/data/two-factor-confirmation"
import { getAccountByUserId } from "./data/account"



export const {
  handlers: { GET, POST },
  auth,
  signIn,
  signOut,
  update
} = NextAuth({
  pages: {
    signIn: "/auth/login",
    error: "/auth/error",
  },
  events: {
    async linkAccount({ user }) {
      await db.user.update({
        where: { id: user.id },
        data: { emailVerified: new Date() }
      })
    }
  },
  callbacks: {
    async signIn({ user, account }) {
      if (account?.provider !== "credentials") return true;
      
      const existingUser = await getUserById(user.id!);
      
      if(!existingUser?.emailVerified) return false

      if(existingUser.isTwoFactorEnabled) {
        const twoFactorConfirmation = await getTwoFactorConfirmationByUserId(existingUser.id)
        if(!twoFactorConfirmation ) return false

        await db.twoFactorConfirmation.delete({ where: { id: twoFactorConfirmation.id } })
      }

      return true
    },
    async session({ session, token }) {
      if (token.sub && session.user) {
        session.user.id = token.sub
      }

      if(token.role && session.user) {
        session.user.role = token.role as UserRole
      }

      if(session.user) {
        session.user.isTwoFactorEnabled = token.isTwoFactorEnabled as boolean
      }

      if(session.user && token.email) {
        session.user.name = token.name
        session.user.email = token.email
        session.user.isOAuth = token.isOAuth as boolean;
      }

      return session
    },
    async jwt({ token }) {
      if(!token.sub) return token;

      const existingUser = await getUserById(token.sub)

      if(!existingUser) return token;

      const existingAccount = await getAccountByUserId(existingUser.id)
      
      token.isOAuth = !!existingAccount
      token.name = existingUser.name
      token.email = existingUser.email
      token.role = existingUser.role
      token.isTwoFactorEnabled = existingUser.isTwoFactorEnabled

      return token
    }
  },
  adapter: PrismaAdapter(db),
  session: { strategy: "jwt" },
  ...authConfig,
})